@book{
c1, 
 
 author = "魏楚原 ",
     title = "《大型园区网络建设与管理》",
     publisher = "机械工业出版社",
     year = "2015.3"
	 }
@book{
c2,
	   author = "乔辉",
     title = "《网络硬件搭建与配置实践》",
     publisher = "电子工业出版社",
     year = "2012.5"}
3．杜洪乐.《计算机网络实验指导书》.天津大学出版社.2016.3：
@book{
c3,
	author="杜洪乐",
	title="《计算机网络实验指导书》",
	publisher = "天津大学出版社",
	year = "2016.3"
}
